What is the primary spirit used in the Outback Old Fashioned?

The Outback Old Fashioned prominently features Makers Mark Bourbon as its primary spirit. This choice aligns with the traditional recipe for an Old Fashioned, which typically incorporates Bourbon or Rye whiskey as the base. Makers Mark Bourbon, known for its smooth texture and rich flavor profile, enhances the classic cocktail experience, complementing the muddled sugar, bitters, and garnishes that are characteristic of the drink.

Using Bourbon brings warmth and depth to the Old Fashioned, making it a popular choice in this context. This selection not only satisfies patrons looking for a classic cocktail but also showcases Outback Steakhouse's commitment to quality ingredients. The other mentioned spirits do not fit the traditional format of an Old Fashioned and are used in different cocktails, thus clarifying why they are not suitable choices for this particular beverage.